1.配置文件一般都会缺少<httpHandlers></httpHandlers> 这一段, <httpHandlers> <remove verb="*" path="*.asmx"/> <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/> </httpHandlers> 2.<asp:SrciptManager> 控件一定要紧跟在<form>后面
3.另外 服务器上可能缺少三个dll文件他们所在的文件夹位置是C:Program FilesMicrosoft ASP.NETASP.NET 2.0 AJAX Extensionsv1.0.61025AJAXExtensionsToolbox.dllSystem.Web.Extensions.Design.dllSystem.Web.Extensions.dll把这三个dll拷贝到你发布到服务器的网站的bin文件夹里 应该就可以